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. 2009 Dec 19;25(3):721–727. doi: 10.1093/humrep/dep441

Table I.

Resources used to help plan conception

Ovulation tests 61% (26)
Lesbian parenting books/information 49% (21)
Calculating cycle length and likely fertile ‘window’ 49% (21)
Fertile mucus 40% (17)
Basal body temperature charting 28% (12)
Blood tests at clinic 14% (6)
Ultrasound 12% (5)
None 9% (4)